St. Joseph High School offers a variety of courses for students. These courses meet the requirements of the Ministry of Education for a high school diploma and prepare students to enter a wide variety of post-secondary institutions or to move directly to the job market. The first two years of high school are intended to be exploratory. Hence, students are required to take a combination of compulsory classes and electives each year. This will enable the students to choose electives at the appropriate level in their last two years of high school.

To qualify for graduation from St. Joseph, students must have a minimum of 24 credits from the 10, 20 and 30 levels.